Secondary-beam production: Protons versus heavy ions M. V. Ricciardi, S. Lukić, A. Kelić, K.-H. Schmidt and M. Veselsky Eur. Phys. J. Special Topics, 150 (2007) 321-324 Published online: 08 December 2007 DOI: 10.1140/epjst/e2007-00337-x